Sonfjället, also spelled Sånfjället (Swedish pronunciation: [ˈsôːnˌfjɛlːɛt]; local dialect: Sôna), is a national park located in Härjedalen, central Sweden. It was created in 1909, making it one of Europe's oldest national parks. In 1989, the park's area was expanded, and it now covers 103 km² (40 square miles).

The park's mountainous region is filled with large rocks and has lakes that flow through them. Forests also cover much of the area surrounding the mountains.

The park is known for the animals that live there, including a group of bears and a large group of elk. Other animals commonly found in the park include wolves and lynx.

Etymology

The national park is named after the mountain Sonfjället, which rises to 1,278 meters (4,193 feet) above sea level. The exact meaning of the word "son" in this case is unknown. Some people think it might be connected to the Old West Norse word "sunna," which means "sun," making "Sonfjället" mean "the sun fell." However, this idea has been argued about and is not widely accepted because it does not match how the word is spoken locally.

From 1919 to 2010, the official spelling was "Sånfjället," which an official group believed better showed how the name was pronounced. In June 2010, the spelling was changed back to "Sonfjället."